Resource keyname conflict between application resources

We have several independent apps that we are trying to tie together as a MEF application. Each of the original apps had common resources declared in App.Xaml. Now with MEF, there are no instances of those apps and consequently, no common resources. That
causes the xaml that depended on those StaticResources to fail.

So I added my App's resources through code like this (in Delphi Prism):